/* -*- c-basic-offset: 2; indent-tabs-mode: nil; -*- */
/*
 * FreeDots -- MusicXML to braille music transcription
 *
 * Copyright 2008-2010 Mario Lang  All Rights Reserved.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 3, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details (a copy is included in the LICENSE.txt file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This file is maintained by Mario Lang <mlang@delysid.org>.
 */
package freedots.logging;

import java.util.concurrent.BlockingQueue;
import java.util.logging.LogRecord;

class LogGuiHandler extends java.util.logging.Handler {
  private final BlockingQueue<LogRecord> logQueue = Logger.getQueue();

  LogGuiHandler() { }

  /**
   * Called when the handler must be closed.
   */
  @Override
  public void close() {}

  /**
   * Flush any buffered output.
   */
  @Override
  public void flush() {}

  /**
   * Publish one log record.
   *
   * @param record the record to be logged
   */
  @Override
  public void publish(LogRecord record) {
    if (isLoggable(record)) {
      if (!logQueue.offer(record)) {
        System.err.println("Logger queue is full");
      }
      
      if (freedots.Main.getGui() != null) freedots.Main.getGui().notifyLog();
    }
  }
}
